calculate time difference NAME difftime - calculate time difference LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <......libc implementation. SEE ALSO date (1), gettimeofday (2), time (2), utime (2), clock (3), difftime (3), strftime (3), strptime (3), timegm (3), tzset (3), time (7)...libc implementation. SEE ALSO date (1), gettimeofday (2), time (2), utime (2), clock (3), difftime (3), strftime (3), strptime (3), timegm (3), tzset (3), time (7)...libc implementation. SEE ALSO date (1), gettimeofday (2), time (2), utime (2), clock (3), difftime (3), strftime (3), strptime (3), timegm (3), tzset (3), time (7)...libc implementation. SEE ALSO date (1), gettimeofday (2), time (2), utime (2), clock (3), difftime (3), strftime (3), strptime (3), timegm (3), tzset (3), time (7)...libc implementation. SEE ALSO date (1), gettimeofday (2), time (2), utime (2), clock (3), difftime (3), strftime (3), strptime (3), timegm (3), tzset (3), time (7)...libc implementation. SEE ALSO date (1), gettimeofday (2), time (2), utime (2), clock (3), difftime (3), strftime (3), strptime (3), timegm (3), tzset (3), time (7)...libc implementation. SEE ALSO date (1), gettimeofday (2), time (2), utime (2), clock (3), difftime (3), strftime (3), strptime (3), timegm (3), tzset (3), time (7)...libc implementation. SEE ALSO date (1), gettimeofday (2), time (2), utime (2), clock (3), difftime (3), strftime (3), strptime (3), timegm (3), tzset (3), time (7)...libc implementation. SEE ALSO date (1), gettimeofday (2), time (2), utime (2), clock (3), difftime (3), strftime (3), strptime (3), timegm (3), tzset (3), time (7)